How would you join these two tables, and what would the resulting dataset contain?

When you join two tables, the result is a new table that combines rows from both tables based on a join condition. For example, if you have Table A with columns (id, name) and Table B with columns (id, order_date), a simple inner join on the id column will produce rows that contain id, name, and order_date for every matching id in both tables. The resulting dataset will have as many rows as there are matching pairs, and each row will include columns from both source tables. If you use a left outer join, you will keep all rows from Table A and add matching columns from Table B, filling with NULLs where there is no match. The specific shape of the result depends on the join type (inner, left, right, full) and the columns you select. In practice, you decide the join type based on whether you want to preserve unmatched rows and which columns you need for your analysis.